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Title:
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The field descent method.
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Author:
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Bernhard, Schmidt.; Ka, Hin Leung.
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Copyright year:
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2005 |
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Abstract:
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We obtain a broadly applicable decomposition of group ring elements into a "subfield part" and a "kernel part". Applications include the verification of Lander's conjecture for all difference sets whose order is a power of a prime >3 and for all McFarland, Spence and Chen/Davis/Jedwab difference sets. We obtain a new general exponent bound for difference sets. We show that there is no circulant Hadamard matrix of order v with 4<v<548, 964, 900 and no Barker sequence of length l with 13 < l < 10^22. |
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Subject:
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DRNTU::Science::Mathematics::Discrete mathematics::Combinatorics. |
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Type:
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Journal Article |
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Series/ Journal Title:
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Journal of designs codes and cryptography |
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School:
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School of Physical and Mathematical Sciences |
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Rights:
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Designs, codes and cryptography © copyright 2005 Springer Netherlands. The journal's website is located at http://www.springerlink.com/content/lwt1482721p60t1j. |
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Version:
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Accepted version |
